set 1 MCQ Questions & Answers Detailed Explanation

Question : 1

The process used to separate oil and water is

a) separating funnel

b) distillation

c) sublimation

d) chromatography

Question : 2

Magnetism is most beneficial for separating

a) non-metallic solids and solids such as sulfur

b) magnetic solids and solids such as sulfur

c) gases and non-metallic liquids

d) non-magnetic solids from non-magnetic liquids

Question : 3

Which one of the following is not a mixture?

a) Baking soda

b) Tootpaste

c) Toilet soap

d) Vinegar

Question : 4

Which one among the following is not a mixture?

a) Brass

b) Graphite

c) Glass

d) Steel

Question : 5

The oxide of which of the following elements is used as a coolant?

a) Carbon

b) Silicon

c) Nitrogen

d) Phosphorus

Question : 6

Select the one that is a chemical change.

a) Cooking of food

b) Freezing of water

c) Melting of wax

d) None of these